A highly sensitive non-enzymatic glucose sensor based on PtxCo1−x/C nanostructured composites

Qu, Sheng; Mei, He; Wu, Huimin; Zhang, Xun; Wang, Shengfu

doi:10.1016/j.snb.2014.09.079

Cited by 25 publications

(10 citation statements)

References 35 publications

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“…4 V appeared to be by an order of magnitude smaller than that in the case of glucose electrooxidation on platinum [10]. As far as neutral solutions are concerned, the catalytic behavior of gold and platinum toward glucose electrooxidation changes.…”

Section: Au-based Electrocatalystsmentioning

confidence: 75%

“…Taking into consideration the Table 1, it can be also stated that a little amount of Pt introduced also in pure nonprecious metals, such as Ni [52,53], Co [10,54], Cu [55] and Pd [56] can enhance GOR as well as can broad the detection range. Among them Co and Ni can shift the concentration range to lower values (Table 1).…”

Section: Pt-based Electrocatalystsmentioning

confidence: 99%

“…The need that the main disadvantages of the enzyme-based biosensors, such as instability, high cost of enzymes and many others [7][8][9] be overcome, led to the non-enzymatic (catalytic) amperometric biosensors. The simplicity, higher sensitivity and lower cost of the latter have drawn much attention [10]. However, the stability problem and the low poison tolerance remain as problems.…”

Section: Introductionmentioning

confidence: 99%

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Electrocatalysts for Glucose Electrooxidation Reaction: A Review

2015

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The up-to-date research as far as it concerns the abiotic direct glucose fuel cells (DGFCs) is summarized and discussed in the present review. Platinum and goldbased as well as Raney-type electrocatalysts are among the most studied ones. In abiotically (non-implantable) DGFCs, unsupported Pt and PtRuO 2 , exhibited good activity (power density *20 mW cm -2 ), at room temperature and at atmospheric pressure. On the other hand, Au-based electrocatalysts adopted in a DGFC resulted in power densities up to ca. 5 mW cm -2 , exhibiting however high poisoning tolerance. Recently, after the introduction of alkaline membranes into the market, Pd-based electrocatalysts have attracted the attention of the research community because of their enhanced activity in alkaline media. However, there are still very few investigations where membrane electrode assemblies with palladium electrocatalysts have been applied. Moreover, Raney-type electrocatalysts, not yet examined for other fuels in direct polymer electrolyte fuel cells, are considered to be the most appropriate for implantable abiotic DGFCs. A novel implantable fuel cell in a human brain performed with 3.4 9 10 -3 lW power for 10 h adopting Raney-type electrocatalysts.

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Section: Au-based Electrocatalystsmentioning

confidence: 75%

Section: Pt-based Electrocatalystsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Electrocatalysts for Glucose Electrooxidation Reaction: A Review

2015

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“…Diabetes is one of the most common diseases in modern society with more than 300 million affected patients worldwide . It is of great significance to monitor blood glucose concentration for the control or treatment of diabetes caused by the extortionate glucose level .…”

Section: Introductionmentioning

confidence: 99%

“…More and more methods have been established for the aims, such as optical approaches , colorimetry , electrochemical approaches , and so on. Among these methods, electrochemical sensors (enzymatic and non‐enzymatic sensors) have been widely used in the detection of glucose or H 2 O 2 due to their high sensitivity and good selectivity . However, some drawbacks have been found about the enzyme‐based sensors, such as costliness, instability, complicated immobilization procedure, and easy denaturation .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Pt_xSn/MWCNTs and their Application in Non‐enzymatic Glucose and Hydrogen Peroxide Sensors

Min

et al. 2016

Electroanalysis

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PtxSn/MWCNTs (x=1, 2, 3) nanocomposites were synthesized by chemical reduction. Comparing all of the materials, the results revealed that the best material was Pt3Sn/MWCNTs. The sensor based on Pt3Sn/MWCNTs exhibited excellent catalytic activities towards glucose and hydrogen peroxide. Sensing of glucose had a double‐linear range: one was between 50 μM and 550 μM, the other was between 1.35 mM and 16.35 mM. These were due to the fact that more and more intermediate species were adsorbed onto the electrode surface with increasing concentration of glucose, which limited the following glucose oxidation. Meanwhile, the sensor also had a linear response range between 0.05 mM and 18.95 mM for hydrogen peroxide. Furthermore, the glucose and hydrogen peroxide sensors exhibited excellent selectivity, stability, and reproducibility. Thus the sensors had potential utilities in the detection of glucose and hydrogen peroxide.

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Cu(III)-independent oxidation and sensing of glucose on multi-layer stacked copper nanoparticles

et al. 2015

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A highly sensitive electrode for sensing glucose has been fabricated by electropolymerization of 2-amino-5-mercapto-1,3,4-thiadiazole on a solid carbon paste substrate, and subsequent electrodeposition of multi-layer stacked copper particles as an outer surface. The individual copper particles are characterized by a large number of edges and corners of crystallites. Their preferred orientation {111} is parallel to the electrode surface. The conductive polymer interlayer results in an increase of the particle nucleation density and a further decrease of the polarization overpotential for direct (enzyme-free) oxidation of glucose in 0.1 M NaOH solution. A well-shaped voltammetric peak can be observed at around 0.3-0.5 V (vs. SCE, depending on scan rate) that is due to glucose oxidation. This potential is much lower than the one required for Cu(III) formation. A bulk electrolysis experiment using a thin-layer electrochemical cell confirmed the assumption that that glucose undergoes 2-electron oxidation. The mechanism of glucose oxidation in the absence of Cu(III) is discussed. The electrode exhibits a very high sensitivity (slope) of 3.31 mA cm −2 mM −1 , and the detection limit is 2 μM (at an SNR of 3). Features of the new sensor include the ease of fabrication, its high stability and good selectivity.

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A highly sensitive non-enzymatic glucose sensor based on PtxCo1−x/C nanostructured composites

Cited by 25 publications

References 35 publications

Electrocatalysts for Glucose Electrooxidation Reaction: A Review

Electrocatalysts for Glucose Electrooxidation Reaction: A Review

Synthesis of Pt_xSn/MWCNTs and their Application in Non‐enzymatic Glucose and Hydrogen Peroxide Sensors

Cu(III)-independent oxidation and sensing of glucose on multi-layer stacked copper nanoparticles

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A highly sensitive non-enzymatic glucose sensor based on PtxCo1−x/C nanostructured composites

Cited by 25 publications

References 35 publications

Electrocatalysts for Glucose Electrooxidation Reaction: A Review

Electrocatalysts for Glucose Electrooxidation Reaction: A Review

Synthesis of PtxSn/MWCNTs and their Application in Non‐enzymatic Glucose and Hydrogen Peroxide Sensors

Cu(III)-independent oxidation and sensing of glucose on multi-layer stacked copper nanoparticles

Contact Info

Product

Resources

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Synthesis of Pt_xSn/MWCNTs and their Application in Non‐enzymatic Glucose and Hydrogen Peroxide Sensors